Vehicle Maintenance and Repair Flashcards
7 cards from real CAFM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Vehicle Maintenance and Repair flashcards as text
A fleet vehicle's brake pedal feels spongy and sinks to the floor under moderate pressure. What is the most likely cause?
Answer: Air in the brake hydraulic system
Air in the hydraulic brake lines compresses under pressure, causing a spongy pedal feel and reduced braking effectiveness.
When implementing a preventive maintenance schedule for a mixed fleet, which interval system is generally preferred over fixed mileage intervals?
Answer: Severity-adjusted intervals
Severity-adjusted intervals account for actual operating conditions (stop-and-go, idling, towing) which affect component wear more accurately than fixed mileage alone.
A fleet manager notices repeated alternator failures on a specific vehicle model. What is the BEST first step in diagnosing this systemic issue?
Answer: Review repair history and identify common failure modes
Reviewing repair history to identify common failure modes helps pinpoint root causes such as accessory loads, wiring issues, or a faulty OEM part batch.
What does the acronym 'OBD-II' refer to in fleet vehicle diagnostics?
Answer: On-Board Diagnostics, second generation
OBD-II is the standardized on-board diagnostics system mandatory on US vehicles since 1996, providing fault codes and sensor data via a standard port.
A fleet vehicle is due for a timing belt replacement per manufacturer schedule. The technician finds the belt in apparently good condition. What should the fleet manager authorize?
Answer: Replace it on schedule regardless of appearance
Timing belt failures are catastrophic and often occur without visible warning signs; replacement on schedule is standard fleet risk management practice.
Which type of engine oil viscosity rating is most critical for fleet vehicles operating in regions with extreme temperature swings?
Answer: Multi-grade oil (e.g., SAE 5W-30)
Multi-grade oils maintain proper viscosity across a wide temperature range, ensuring adequate lubrication during cold starts and high-temperature operation.
A fleet technician reports that a vehicle's coolant is milky or frothy in appearance. What does this most likely indicate?
Answer: Head gasket failure allowing oil-coolant mixing
Milky or frothy coolant is a classic sign of head gasket failure, where combustion gases or oil enters the cooling system.